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  <div id="layout-content"><div id="mysql-xdevapi.constants" class="appendix">
 <h1>预定义常量</h1>

 <p class="simpara">下列常量由此扩展定义，且仅在此扩展编译入 PHP 或在运行时动态载入时可用。</p>
 <p class="para">
  <dl>
   
    <dt id="constant.mysqlx-client-ssl">
     <strong><code>MYSQLX_CLIENT_SSL</code></strong>
     (<span class="type">int</span>)
    </dt>

    <dd>

     <span class="simpara">
     </span>
    </dd>

   
   
    <dt id="constant.mysqlx-type-decimal">
     <strong><code>MYSQLX_TYPE_DECIMAL</code></strong>
     (<span class="type">int</span>)
    </dt>

    <dd>

     <span class="simpara">
     </span>
    </dd>

   
   
    <dt id="constant.mysqlx-type-tiny">
     <strong><code>MYSQLX_TYPE_TINY</code></strong>
     (<span class="type">int</span>)
    </dt>

    <dd>

     <span class="simpara">
     </span>
    </dd>

   
   
    <dt id="constant.mysqlx-type-short">
     <strong><code>MYSQLX_TYPE_SHORT</code></strong>
     (<span class="type">int</span>)
    </dt>

    <dd>

     <span class="simpara">
     </span>
    </dd>

   
   
    <dt id="constant.mysqlx-type-smallint">
     <strong><code>MYSQLX_TYPE_SMALLINT</code></strong>
     (<span class="type">int</span>)
    </dt>

    <dd>

     <span class="simpara">
     </span>
    </dd>

   
   
    <dt id="constant.mysqlx-type-mediumint">
     <strong><code>MYSQLX_TYPE_MEDIUMINT</code></strong>
     (<span class="type">int</span>)
    </dt>

    <dd>

     <span class="simpara">
     </span>
    </dd>

   
   
    <dt id="constant.mysqlx-type-int">
     <strong><code>MYSQLX_TYPE_INT</code></strong>
     (<span class="type">int</span>)
    </dt>

    <dd>

     <span class="simpara">
     </span>
    </dd>

   
   
    <dt id="constant.mysqlx-type-bigint">
     <strong><code>MYSQLX_TYPE_BIGINT</code></strong>
     (<span class="type">int</span>)
    </dt>

    <dd>

     <span class="simpara">
     </span>
    </dd>

   
   
    <dt id="constant.mysqlx-type-long">
     <strong><code>MYSQLX_TYPE_LONG</code></strong>
     (<span class="type">int</span>)
    </dt>

    <dd>

     <span class="simpara">
     </span>
    </dd>

   
   
    <dt id="constant.mysqlx-type-float">
     <strong><code>MYSQLX_TYPE_FLOAT</code></strong>
     (<span class="type">int</span>)
    </dt>

    <dd>

     <span class="simpara">
     </span>
    </dd>

   
   
    <dt id="constant.mysqlx-type-double">
     <strong><code>MYSQLX_TYPE_DOUBLE</code></strong>
     (<span class="type">int</span>)
    </dt>

    <dd>

     <span class="simpara">
     </span>
    </dd>

   
   
    <dt id="constant.mysqlx-type-null">
     <strong><code>MYSQLX_TYPE_NULL</code></strong>
     (<span class="type">int</span>)
    </dt>

    <dd>

     <span class="simpara">
     </span>
    </dd>

   
   
    <dt id="constant.mysqlx-type-timestamp">
     <strong><code>MYSQLX_TYPE_TIMESTAMP</code></strong>
     (<span class="type">int</span>)
    </dt>

    <dd>

     <span class="simpara">
     </span>
    </dd>

   
   
    <dt id="constant.mysqlx-type-longlong">
     <strong><code>MYSQLX_TYPE_LONGLONG</code></strong>
     (<span class="type">int</span>)
    </dt>

    <dd>

     <span class="simpara">
     </span>
    </dd>

   
   
    <dt id="constant.mysqlx-type-int24">
     <strong><code>MYSQLX_TYPE_INT24</code></strong>
     (<span class="type">int</span>)
    </dt>

    <dd>

     <span class="simpara">
     </span>
    </dd>

   
   
    <dt id="constant.mysqlx-type-date">
     <strong><code>MYSQLX_TYPE_DATE</code></strong>
     (<span class="type">int</span>)
    </dt>

    <dd>

     <span class="simpara">
     </span>
    </dd>

   
   
    <dt id="constant.mysqlx-type-time">
     <strong><code>MYSQLX_TYPE_TIME</code></strong>
     (<span class="type">int</span>)
    </dt>

    <dd>

     <span class="simpara">
     </span>
    </dd>

   
   
    <dt id="constant.mysqlx-type-datetime">
     <strong><code>MYSQLX_TYPE_DATETIME</code></strong>
     (<span class="type">int</span>)
    </dt>

    <dd>

     <span class="simpara">
     </span>
    </dd>

   
   
    <dt id="constant.mysqlx-type-year">
     <strong><code>MYSQLX_TYPE_YEAR</code></strong>
     (<span class="type">int</span>)
    </dt>

    <dd>

     <span class="simpara">
     </span>
    </dd>

   
   
    <dt id="constant.mysqlx-type-newdate">
     <strong><code>MYSQLX_TYPE_NEWDATE</code></strong>
     (<span class="type">int</span>)
    </dt>

    <dd>

     <span class="simpara">
     </span>
    </dd>

   
   
    <dt id="constant.mysqlx-type-enum">
     <strong><code>MYSQLX_TYPE_ENUM</code></strong>
     (<span class="type">int</span>)
    </dt>

    <dd>

     <span class="simpara">
     </span>
    </dd>

   
   
    <dt id="constant.mysqlx-type-set">
     <strong><code>MYSQLX_TYPE_SET</code></strong>
     (<span class="type">int</span>)
    </dt>

    <dd>

     <span class="simpara">
     </span>
    </dd>

   
   
    <dt id="constant.mysqlx-type-tiny-blob">
     <strong><code>MYSQLX_TYPE_TINY_BLOB</code></strong>
     (<span class="type">int</span>)
    </dt>

    <dd>

     <span class="simpara">
     </span>
    </dd>

   
   
    <dt id="constant.mysqlx-type-medium-blob">
     <strong><code>MYSQLX_TYPE_MEDIUM_BLOB</code></strong>
     (<span class="type">int</span>)
    </dt>

    <dd>

     <span class="simpara">
     </span>
    </dd>

   
   
    <dt id="constant.mysqlx-type-long-blob">
     <strong><code>MYSQLX_TYPE_LONG_BLOB</code></strong>
     (<span class="type">int</span>)
    </dt>

    <dd>

     <span class="simpara">
     </span>
    </dd>

   
   
    <dt id="constant.mysqlx-type-blob">
     <strong><code>MYSQLX_TYPE_BLOB</code></strong>
     (<span class="type">int</span>)
    </dt>

    <dd>

     <span class="simpara">
     </span>
    </dd>

   
   
    <dt id="constant.mysqlx-type-var-string">
     <strong><code>MYSQLX_TYPE_VAR_STRING</code></strong>
     (<span class="type">int</span>)
    </dt>

    <dd>

     <span class="simpara">
     </span>
    </dd>

   
   
    <dt id="constant.mysqlx-type-string">
     <strong><code>MYSQLX_TYPE_STRING</code></strong>
     (<span class="type">int</span>)
    </dt>

    <dd>

     <span class="simpara">
     </span>
    </dd>

   
   
    <dt id="constant.mysqlx-type-char">
     <strong><code>MYSQLX_TYPE_CHAR</code></strong>
     (<span class="type">int</span>)
    </dt>

    <dd>

     <span class="simpara">
     </span>
    </dd>

   
   
    <dt id="constant.mysqlx-type-bytes">
     <strong><code>MYSQLX_TYPE_BYTES</code></strong>
     (<span class="type">int</span>)
    </dt>

    <dd>

     <span class="simpara">
     </span>
    </dd>

   
   
    <dt id="constant.mysqlx-type-interval">
     <strong><code>MYSQLX_TYPE_INTERVAL</code></strong>
     (<span class="type">int</span>)
    </dt>

    <dd>

     <span class="simpara">
     </span>
    </dd>

   
   
    <dt id="constant.mysqlx-type-geometry">
     <strong><code>MYSQLX_TYPE_GEOMETRY</code></strong>
     (<span class="type">int</span>)
    </dt>

    <dd>

     <span class="simpara">
     </span>
    </dd>

   
   
    <dt id="constant.mysqlx-type-json">
     <strong><code>MYSQLX_TYPE_JSON</code></strong>
     (<span class="type">int</span>)
    </dt>

    <dd>

     <span class="simpara">
     </span>
    </dd>

   
   
    <dt id="constant.mysqlx-type-newdecimal">
     <strong><code>MYSQLX_TYPE_NEWDECIMAL</code></strong>
     (<span class="type">int</span>)
    </dt>

    <dd>

     <span class="simpara">
     </span>
    </dd>

   
   
    <dt id="constant.mysqlx-type-bit">
     <strong><code>MYSQLX_TYPE_BIT</code></strong>
     (<span class="type">int</span>)
    </dt>

    <dd>

     <span class="simpara">
     </span>
    </dd>

   
   
    <dt id="constant.mysqlx-lock-default">
     <strong><code>MYSQLX_LOCK_DEFAULT</code></strong>
     (<span class="type">int</span>)
    </dt>

    <dd>

     <span class="simpara">
     </span>
    </dd>

   
   
    <dt id="constant.mysqlx-lock-nowait">
     <strong><code>MYSQLX_LOCK_NOWAIT</code></strong>
     (<span class="type">int</span>)
    </dt>

    <dd>

     <span class="simpara">
     </span>
    </dd>

   
   
    <dt id="constant.mysqlx-lock-skip-locked">
     <strong><code>MYSQLX_LOCK_SKIP_LOCKED</code></strong>
     (<span class="type">int</span>)
    </dt>

    <dd>

     <span class="simpara">
     </span>
    </dd>

   
  </dl>

 </p>
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